biosig-tools: A heap-based buffer overflow vulnerability exists in the Nicolet WFT parsing functionality of The Biosig Project libb...
CVE-2026-20777 is fixed in 5 products on 1 platform, first by biosig-tools 2.6.0-1ubuntu1+esm1, released March 3, 2026. It is not reported as exploited. Patch Radar priority: High.
A heap-based buffer overflow vulnerability exists in the Nicolet WFT parsing functionality of The Biosig Project libbiosig 3.9.2 and Master Branch (db9a9a63). A specially crafted .wft file can lead to arbitrary code execution. An attacker can provide a malicious file to trigger this vulnerability.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| biosig · Debian 14 | 3.9.5-1 | DEBIAN-CVE-2026-20777 | Mar 3, 2026 |
| biosig-tools · Ubuntu 24.04.5 LTS (noble) | 2.6.0-1ubuntu1+esm1 | biosig-tools 2.6.0-1ubuntu1+esm1 | Mar 3, 2026 |
| biosig-tools · Ubuntu 26.04.1 LTS (resolute) | 3.9.0-1ubuntu0.1~esm1 | biosig-tools 3.9.0-1ubuntu0.1~esm1 | Mar 3, 2026 |
| libbiosig3 · Ubuntu 24.04.5 LTS (noble) | 2.6.0-1ubuntu1+esm1 | libbiosig3 2.6.0-1ubuntu1+esm1 | Mar 3, 2026 |
| libbiosig3 · Ubuntu 26.04.1 LTS (resolute) | 3.9.0-1ubuntu0.1~esm1 | libbiosig3 3.9.0-1ubuntu0.1~esm1 | Mar 3, 2026 |
| octave-biosig · Ubuntu 24.04.5 LTS (noble) | 2.6.0-1ubuntu1+esm1 | octave-biosig 2.6.0-1ubuntu1+esm1 | Mar 3, 2026 |
| octave-biosig · Ubuntu 26.04.1 LTS (resolute) | 3.9.0-1ubuntu0.1~esm1 | octave-biosig 3.9.0-1ubuntu0.1~esm1 | Mar 3, 2026 |
| python3-biosig · Ubuntu 24.04.5 LTS (noble) | 2.6.0-1ubuntu1+esm1 | python3-biosig 2.6.0-1ubuntu1+esm1 | Mar 3, 2026 |
| python3-biosig · Ubuntu 26.04.1 LTS (resolute) | 3.9.0-1ubuntu0.1~esm1 | python3-biosig 3.9.0-1ubuntu0.1~esm1 | Mar 3, 2026 |
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